We speak castilian but we understand english and french .
我们讲卡斯蒂利亚，但我们明白英语和法语。
Castilian is the official language of colombia .
卡司提尔语为哥伦比亚之官方语言。
Of these occitan and catalan are probably the most mutually intelligible although many castilian speakers have little difficulty understanding catalan with the reverse almost invariably true .
